1
TS EAMCET 2020 (Online) 10th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The molecular formula of metaphosphoric acid is

A

$\mathrm{H}_3 \mathrm{PO}_4$

B

$\mathrm{HPO}_3$

C

$\mathrm{H}_2 \mathrm{PO}_3$

D

$\mathrm{H}_3 \mathrm{PO}_2$

2
TS EAMCET 2020 (Online) 10th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The final acid product obtained during the synthesis of $\mathrm{H}_2 \mathrm{SO}_4$ by contact process is

A

$\mathrm{H}_2 \mathrm{SO}_4$ (conc.)

B

$\mathrm{H}_2 \mathrm{SO}_4$ (dil.)

C

$\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_3$

D

$\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_7$

3
TS EAMCET 2020 (Online) 10th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Among the following series of transition metal ions, the one in which all the metal ions have $3 d^2, 3 p^6$ electronic configuration is

(Atomic number, $\mathrm{Ti}=22, \mathrm{~V}=23, \mathrm{Cr}=24$, $\mathrm{Mn}=25$ )

A

$\mathrm{Ti}^{3+}, \mathrm{V}^{2+}, \mathrm{Cr}^{3+}$ and $\mathrm{Mn}^{4+}$

B

$\mathrm{Ti}^{+}, \mathrm{V}^{4+}, \mathrm{Cr}^{6+}$ and $\mathrm{Mn}^{7+}$

C

$\mathrm{Ti}^{4+}, \mathrm{V}^{3+}, \mathrm{Cr}^{2+}$ and $\mathrm{Mn}^{3+}$

D

$\mathrm{Ti}^{2+}, \mathrm{V}^{3+}, \mathrm{Cr}^{4+}$ and $\mathrm{Mn}^{5+}$

4
TS EAMCET 2020 (Online) 10th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The correct match for complex with its magnetic behaviour in the following is

A

$\left[\mathrm{Zn}\left(\mathrm{OH}_2\right)_6\right]^{2+}$; paramagnetic

B

$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$; diamagnetic

C

$\left[\mathrm{CoF}_6\right]^{3-}$; diamagnetic

D

$\left[\mathrm{V}\left(\mathrm{OH}_2\right)_6\right]^{2+}$; diamagnetic

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